OE - GOOD - some minor replacement parts; metal smoothly rusted or lightly pitted in places, cleaned; principal lettering, numerals and design on metal legible; lightly scratched, bruised or minor cracks repaired; in good working order.

NPRF - NON-PROFESSIONALLY REFINISHED/COLD BLUE, ETC.

WW - WOOD IS WORSE FOR THE PERCENT FINISH RATING GIVEN

These were the primary firearms in Japan up to the mid 19th century.